<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="~@/assets/logo.png" alt />
      </div>
      <!-- 登录表单区域 -->
      <el-form
        ref="loginFormRef"
        :model="loginForm"
        :rules="loginFormRules"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" type="password" prefix-icon="iconfont icon-lock_fill"></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: "Login",
  data() {
    return {
      //表单数据绑定对象
      loginForm: {
        username: "admin",
        password: "123456"
      },
      //表单验证规则
      loginFormRules: {
        //验证用户名是否合法
        username: [
          { required: true, message: "请输入活动名称", trigger: "blur" },
          { min: 3, max: 10, message: "长度在 3 到 10 个字符", trigger: "blur" }
        ],
        //验证密码是否合法
        password: [
          { required: true, message: "请输入登录密码", trigger: "blur" },
          { min: 6, max: 15, message: "长度在 6 到 15 个字符", trigger: "blur" }
        ]
      }
    };
  },
  methods: {
    //点击重置按钮，重置表单
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields();
    },
    login() {
      this.$refs.loginFormRef.validate(async valid => {
        // console.log(valid); //true or false
        if (!valid) return;
        //
        const { data: res } = await this.$http.post("login", this.loginForm);
        console.log(res);
        if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
        this.$message.success("登录成功");
        //1.登录成功后token保存到sessionStorage中
        window.sessionStorage.setItem("token", res.data.token);
        //2.路由跳转
        this.$router.replace("/home");
      });
    }
  }
};
</script>

<style  scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100vh;
  position: relative;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: white;
  border-radius: 5px;
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  margin: auto;
  /* top: 50%;
  left: 50%;
  transform: translate(-50%, -50%); */
}
.avatar_box {
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
}
.avatar_box img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: #eee;
}

.login_form {
  bottom: 0;
  position: absolute;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns {
  display: flex;
  justify-content: flex-end;
}
</style>